Slagheap Ground enters the battlefield tapped.
, : Add to your mana pool.
: Slagheap Ground becomes a 2/2 red and green Giant creature with trample until end of turn. It's still a land.
, 
: Add 
to your mana pool., : Add to your mana pool.
: Slagheap Ground becomes a 2/2 red and green Giant creature with trample until end of turn. It's still a land.
